Audio cable (3.5mm stereo jack to 3.5mm stereo jack) for your Gear4 speaker dock.
Directly connect iPhones, smartphones with the 3.5mm headphone socket to your Gear4 House Party 4 speaker via the Aux input on the rear of the speaker.
Note: For iPhone 7, 8, 10, X etc without headphone socket, use the Apple Lightning to 3.5mm socket adapter included with iPhone.